作业4.1.2将一个不以0开头的数字串逆序输出

H0040102ChangeNum.java

public class H0040102ChangeNum{
	public static void main(String[] args){
		
		System.out.println("请输入要逆转的整数串");
		java.util.Scanner input = new java.util.Scanner(System.in);
		long num = input.nextLong();
		String str = "";
		str += num; 
		
		long midnum;
		String changedNum = "";
		
		while(num > 0){
			
			midnum = num;
			midnum = midnum % 10;
			changedNum += midnum;
			num = (num - midnum) / 10;
			
		}
		
		System.out.println("逆转后的数字串为：" + changedNum);
	}
}